Box with Shutter Lid

Here is a box with a shutter lid. The lid conveniently slides away into the box itself, hence not having the box and lid separated; no lost lid! This is my 3D design of the box for 3D printing. The design comes in 3 pieces, the base, a side wall and the sliding shutter. Internal box dimensions: 100 x 60 x 37.5mm. The parts are held together by two countersunk 6 AWG (3.5mm) x 15mm self tapping screws. My print is made in Prusament PLA 1.75mm Silver and 3DFillies PLA+ Silk White filaments, with 0.